<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            font-size: 5px;
        }
        .title{
            width: 100rem;
            height: 100px;
            background-color: aqua;
        }
    </style>
</head>
<body>
    <div class="page">
        <div class="box">
            <div class="title"></div>
        </div>
    </div>
</body>
</html>